Due Dates for Applications:
Small Grains April 1 Turf Grass Mar 1 Soybeans Early June 1 Peanuts June 15 Soybeans Fall Sept. 1
SMALL GRAIN CERTIFICATION STANDARDS
1. General standards.
The general standards as adopted in the front of this publication are basic and applies to small grain.
2. Land requirements.
A crop of small grain will not be eligible for certification if planted on land on which a small grain crop was grown the year previous except a crop of the same variety grown from certified seed.
In fields double-cropped, neither of the two crops grown in the previous calendar year shall have been the same kind as the crop being inspected, unless they were grown from a class of certified seed of the same variety.
3. Field standards.
a. Field Inspection - At least one field inspection shall be made after the crop is fully headed when varietal or crop mixtures can best be determined.
b. Isolation -
(1) Wheat, Oats, Barley, Triticale - A field shall be separated by a strip of ground adequate to prevent mechanical mixtures. The strip may be either mowed, uncropped or planted to some crop than the kind being certified.
(2) Rye - All rye fields used for the production of certified seed must be isolated by at least 220 yards from the fields of any other variety or varieties of rye or fields of the same variety that do not meet the varietal purity requirements for certification. Isolation between diploid and tetraploid rye shall be at least 15 feet.
Maximum Permitted in Each Class
Factor Foundation Registered Certified
Other Varieties None 1:5000 1:2000
* Inseparable Other Crops None None 10 plants per acre
Inseparable Objectional Weeds None None None
except except except
trace of trace of trace of
onion onion onion & trace cockle
**Seed-borne Diseases. 1:20,000 1:10.000 1:200
(.005%) (0.01%) (0.5%)
*Inseparable other crops shall include crop plants, the seed of which cannot be thoroughly removed by the usual methods of cleaning. No rye in other small grains permitted.
**No tolerance for stinking smut in wheat.
4. Seed standards.
Standards for Each Class
Foundation Registered Certified
Pure Seed (minimum)
Wheat, Barley 99.0% 99.0% 99.0%
*Oats, Rye 98.0% 98.0% 98.0%
Inert Matter (maximum)
Wheat, Barley, Triticale 1.0% 1.0% 1.0%
*Oats, Rye 2.0% 2.0% 2.0%
Weed Seeds .01% .02% .05%
Weed Seeds 1/16 per oz. 1/12 per oz. 1/8 per oz.
***Other Crops None None .05%
Other Varieties None .01% .05%
Barley, Oats 90.0% 90.0% 90.0%
Wheat, Rye 85.0% 85.0% 85.0%
Nematodes None None None
*The purity standard for oats may be 98% provided not more than 1% of the impurities consist of impurities other than empty glumes.
**May include wild onion bulblets and wild mustard at the rate of not more than 1/16 per ounce for foundation; 1/12 per ounce for registered; 1/8 per ounce for certified. No corn cockle shall be included in this percentage.
***Registered small grain may contain .01% of the following other crop seed, red clover, lespedeza, orchardgrass, fescue, timothy and rye grass.
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